Senior Java Backend-for-Frontend Engineer

EPAM Systems, Inc.; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

EPAM Systems, Inc. seeks a Senior Server-side Engineer to build and evolve a Backend-for-Frontend service layer that powers high-traffic mobile experiences for clients worldwide.

You will collaborate with engineers, product partners, designers, and QA to deliver reliable APIs and high-quality code. In this role you design and implement REST endpoints, optimize performance, refactor legacy code, and contribute to CI workflows.

Qualifications

• 3+ years of Java experience building server-side applications.
• Senior-level collaboration with cross-functional teams.
• Strong Spring Boot expertise for building and maintaining services.
• Strong REST API development skills, including integration with legacy services.
• Strong algorithms and data structures knowledge for efficient implementations.
• Strong unit testing skills and test-driven mindset.
• Build tools knowledge and experience with CI workflows.
• Performance analysis and optimization skills for backend services.

Responsibilities

• Design and build the Backend-for-Frontend API layer used by mobile applications.
• Implement REST endpoints and service contracts that support mobile user flows.
• Refactor legacy code to improve maintainability, readability, and reliability.
• Write clean, testable code and maintain strong unit test coverage.
• Integrate with existing backend services and handle bespoke and legacy dependencies.
• Fix defects by diagnosing root causes and shipping safe, timely patches.
• Collaborate with engineers, product partners, designers, and QA to deliver features.
• Contribute to CI workflows and build tooling to keep delivery smooth.

Skills

Java

Spring Boot

REST APIs

Solution design

Unit testing

CI/CD

Collaboration

Data structures

Kotlin

GraphQL

Docker

Gradle

English (B2)

Education

Bachelor’s degree in Computer Science or related field, or equivalent experience

Tools

Docker

Gradle

RAML

GraphQL

Job description

EPAM Systems, Inc. seeks a Senior Server-side Engineer to build and evolve a Backend-for-Frontend service layer that powers high-traffic mobile experiences for clients worldwide.

You will collaborate with engineers, product partners, designers, and QA to deliver reliable APIs and high-quality code. In this role you design and implement REST endpoints, optimize performance, refactor legacy code, and contribute to CI workflows.